This documentary focuses on on the class action lawsuit against Chevron for deliberately contaminating the Ecuadorian Amazon and causing a wave of cancer and miscarriages in the region

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May 2014: Here is an update on a story 60 Minutes broadcast four years ago called "Amazon Crude."

The report documented the titanic legal battle between people in a remote region of Ecuador's Amazon jungle and the American oil company, Chevron. The Ecuadorans who sued Chevron allege that Texaco, a company Chevron bought more than a decade ago, contaminated their native rain forest through reckless oil exploration.

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Two years ago, a single judge in a small Ecuadoran town ruled that Chevron was responsible for $18 billion in damages. Chevron has repeatedly denied the accusations and has appealed to Ecuador's highest court. Chevron has also filed a separate lawsuit in a U.S. federal court where it has presented evidence which the company says proves it is the victim of a fraud.

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As part of that lawsuit, Chevron sued Doug Beltman, the lead scientific expert for the people suing Chevron in Ecuador. Beltman was critical of Texaco's operations in Ecuador on 60 Minutes. Beltman also stood behind the statements he made to 60 Minutes in a sworn deposition less than two years ago. But earlier this spring in a sworn witness statement, Beltman disavowed his work on the case, and the comments he made to 60 Minutes about Texaco. After Beltman recanted, Chevron agreed to dismiss its legal claims against Beltman and the company where he serves as executive vice president, Stratus Consulting. It's another unusual twist in a bitter dispute that has lasted 20 years - and counting.